make Entity Framework revert empty strings to null!
public override int SaveChanges(SaveOptions options)
{
foreach (EntityObject entity in this.ObjectStateManager.GetObjectStateEntries(EntityState.Added | EntityState.Modified).Select(entry => entry.Entity))
{
//if (entity == null || entity is User) continue;
string str = typeof(string).Name;
var props = entity.GetType().GetProperties();
var properties = from p in entity.GetType().GetProperties()
where
p.PropertyType.Name == str &&
p.IsDefined(typeof(EdmScalarPropertyAttribute), false) &&
p.IsDefined(typeof(DataMemberAttribute), false)
select p;
foreach (var item in properties)
{
string value = (string)item.GetValue(entity, null);
if (value != null && value.Trim().Length == 0)
entity.GetType().GetField("_" + item.Name, System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance).SetValue(entity, null);
}
}
return base.SaveChanges(options);
}
{
foreach (EntityObject entity in this.ObjectStateManager.GetObjectStateEntries(EntityState.Added | EntityState.Modified).Select(entry => entry.Entity))
{
//if (entity == null || entity is User) continue;
string str = typeof(string).Name;
var props = entity.GetType().GetProperties();
var properties = from p in entity.GetType().GetProperties()
where
p.PropertyType.Name == str &&
p.IsDefined(typeof(EdmScalarPropertyAttribute), false) &&
p.IsDefined(typeof(DataMemberAttribute), false)
select p;
foreach (var item in properties)
{
string value = (string)item.GetValue(entity, null);
if (value != null && value.Trim().Length == 0)
entity.GetType().GetField("_" + item.Name, System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance).SetValue(entity, null);
}
}
return base.SaveChanges(options);
}
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